WO2024090701A1 - Tige de fixation intramédullaire ayant une fonction de prévention de rotation osseuse - Google Patents

Tige de fixation intramédullaire ayant une fonction de prévention de rotation osseuse Download PDF

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Publication number
WO2024090701A1
WO2024090701A1 PCT/KR2023/007941 KR2023007941W WO2024090701A1 WO 2024090701 A1 WO2024090701 A1 WO 2024090701A1 KR 2023007941 W KR2023007941 W KR 2023007941W WO 2024090701 A1 WO2024090701 A1 WO 2024090701A1
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WO
WIPO (PCT)
Prior art keywords
bone
intramedullary
fixing rod
intramedullary fixation
fracture
Prior art date
Application number
PCT/KR2023/007941
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English (en)
Korean (ko)
Inventor
김치훈
서장현
신상진
Original Assignee
주식회사 제일메디칼코퍼레이션
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 주식회사 제일메디칼코퍼레이션 filed Critical 주식회사 제일메디칼코퍼레이션
Publication of WO2024090701A1 publication Critical patent/WO2024090701A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/72—Intramedullary pins, nails or other devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/8605—Heads, i.e. proximal ends projecting from bone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/03—Automatic limiting or abutting means, e.g. for safety
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/03—Automatic limiting or abutting means, e.g. for safety
    • A61B2090/033—Abutting means, stops, e.g. abutting on tissue or skin
    • A61B2090/034—Abutting means, stops, e.g. abutting on tissue or skin abutting on parts of the device itself
    • A61B2090/035—Abutting means, stops, e.g. abutting on tissue or skin abutting on parts of the device itself preventing further rotation

Definitions

  • the present invention relates to an intramedullary fixation rod having a bone rotation prevention function. More specifically, the present invention relates to an intramedullary fixation rod for fixing the fracture of a fracture patient and then fixing other fractures other than the bone marrow with bolts. It relates to an intramedullary fixation rod that has a bone rotation prevention function to prevent the rotated part from rotating.
  • Fractures are a common medical condition and are easily caused by physical stimuli such as external shocks or falls. Osteoporosis, a skeletal disease that weakens bone strength and causes it to fracture easily, and the gradual loss of articular cartilage in joints and secondary changes and symptoms related thereto. It can also be caused by osteoarthritis, which often causes pain or disability.
  • One of the current treatments for these fractures involves surgical reassembly of the fractured bone.
  • the fractured area of the body i.e., the area where the fractured bone is located
  • the fractured area of the body is often immobilized in an external cast for an extended period of time to ensure that the fractured bone heals properly. It may take several months for the cast to be removed and normal activities to resume.
  • intramedullary fixation rods As a means of treating such fractures, various fracture plates in the form of internal fixation splints (hereinafter referred to as 'intramedullary fixation rods') are used as implants in the body.
  • intramedullary fixation rods are used on the outer surface of the bone, that is, with hard density. It has a structure that is fixed to cortical bone (or compact bone) using screws, etc.
  • an intramedullary rod or nail-type implant is used to align and stabilize the fracture.
  • an implant in the form of a metal rod is installed inside the inner cancellous bone canal and fixed at a predetermined position, generally at both ends.
  • This type of implant also commonly called a nail (intramedullary fixation rod), can be removed after the bone fracture has healed, or left in place.
  • Treatment with conventional intramedullary fixation rods sometimes requires long-term retention of the intramedullary fixation rod when the large opening and long metal nails placed across the fracture cannot be removed.
  • the intramedullary fixation bar may be rotated due to the patient's movement and may pass through the banded portion of the clavicle due to carelessness during surgery. Furthermore, the intramedullary fixation bar may be rotated from the outside of the body (Lateral) toward the center of the body ( Because it is inserted through the medial area, there is a risk of penetrating the lung during surgery and causing other complications.
  • the intramedullary fixation rod is inserted into the bone when the clavicle (hereinafter collectively referred to as "bone") (l0) is fractured to prevent the axis of the bone from being misaligned and at the same time to fix the fractured bone.
  • the broken bone was fixed by inserting a bone fixation rod 20 (hereinafter referred to as 'intramedullary fixation rod') into the bone marrow cavity.
  • the intramedullary fixation rod 20 may be roughly composed of a fixation part 21, a shaft part 22, and a tip part 23.
  • the fixing part 21 is formed with a fixing groove 21a so that the intramedullary fixing bar 20 can be fixed to the bone 10 after the intramedullary fixing bar 20 is inserted into the bone 10.
  • a fixing screw (threaded) is inserted and fixed through the fixing groove 21a to fix the intramedullary fixation bar 20 to the bone 10.
  • the intramedullary fixation bar 20 is fixed to the bone 10 by the fixing part 21, thereby preventing rotational deformation of the intramedullary fixation bar within the bone.
  • One side of the intramedullary fixation bar that fixes the fractured bones so that the fractured bones can adhere to each other.
  • the purpose is to prevent rotation of the fractured bone by forming a structure that can prevent rotation by contacting the inner surface of the bone marrow cavity.
  • the present invention to achieve the above technical problem, is a bone that prevents rotation of other fractured parts other than the bone marrow fixed by bolts after implanting a fixation rod in the bone marrow cavity to fix the fracture of a fracture patient.
  • the intramedullary fixation bar 100 includes a fixation part 110, a shaft part 120, and a tip part 130 integrally formed,
  • a screw locking part 111 having an inclined surface 111a is formed on the fixing part 110, and after installation, the screw head protrudes outward and the tissue of the affected area is stimulated, resulting in discomfort felt by the patient and recovery by continuous stimulation. It is characterized by eliminating speed slowdown.
  • the intramedullary fixation rod rotation prevention member of the present invention having the above-mentioned configuration uses an intramedullary fixation rod that fixes fractured bones so that the fractured bones can adhere to each other, and the fixing part of the fixation rod is screwed. It is fixed to one fractured bone, and the other side forms an anti-rotation structure to contact the inside of the other fractured bone, helping the patient recover quickly by preventing rotation of the other fractured bone. It works.
  • Figure 1 is a diagram briefly showing the state in which a conventional intramedullary fixation rod is operated.
  • Figure 2 is a perspective view showing a fixation rod operated within the bone marrow cavity according to the present invention.
  • Figures 3 (a) and (b) are diagrams showing a state in which flat head screws and round head screws are implanted into a fixation rod implanted in the intramedullary cavity according to the present invention
  • the present invention relates to an intramedullary fixation rod (100) having a bone rotation prevention function. More specifically, the intramedullary fixation rod is installed to fix the fracture of a fracture patient, and the intramedullary fixation rod (100) and bone ( It is characterized by providing a structure to prevent rotation between the bone 10 and the fixing rod 100 by fixing the bone 10).
  • the intramedullary fixation rod 100 used in the present invention is composed of a fixation part 110, a shaft part 120, and a tip part 130, as shown in FIG. 2, and this configuration is similar to that previously mentioned. It has the same or similar structure.
  • the structure of the fixing part 110 protrudes outward from the bone 10 and the tissue of the affected area is stimulated, thereby slowing down the speed of recovery due to the discomfort felt by the patient and the continuous stimulation.
  • a screw locking part (111) was provided.
  • the screw locking portion 111 has a certain inclined surface 111a formed to minimize the protrusion of the head of the fastening screw.
  • the tip portion 130 is shaped like a dry hair or a parallelogram like “ ⁇ ” when viewed from the front, so that the end of the corner (top portion) touches the inside of the bone marrow cavity. .
  • the tip portion 130 of the present invention is not necessarily limited to a diamond or parallelogram shape, but is formed as much as possible on the fractured bone with the minimum contact point inside the bone marrow cavity, such as " ⁇ ", " ⁇ ", “ ⁇ ”, etc. It is desirable to prevent rotation. The reason is to ensure smooth insertion with minimal contact during intramedullary procedures.
  • the tip portion 130 was formed to have a larger width and height than the shaft portion 120.
  • the fixing part of the intramedullary fixation rod fixes a part of the fractured bone, and the tip part is tightly fixed to the inside of the other fractured bone, thereby preventing rotation of the fractured bone and preventing the patient from being damaged by the screw. This can prevent discomfort.
  • Bone 100 Intramedullary fixation rod
  • Fixing part 111 Screw locking part

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Veterinary Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Neurology (AREA)
  • Pathology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Surgical Instruments (AREA)

Abstract

La présente invention concerne une tige de fixation intramédullaire ayant une fonction de prévention de rotation osseuse, évitant à une partie fracturée à l'exclusion de la moelle fixée par des boulons de tourner après l'implantation de la tige de fixation intramédullaire afin de fournir une fixation pour la fracture d'un patient souffrant de fracture, tige de fixation intramédullaire (100) dans laquelle une partie de fixation (110), une partie arbre (120) et une partie pointe (130) sont intégrées, une partie de verrouillage de vis (111) ayant une surface inclinée (111a) étant formée sur le côté partie de fixation (110), de façon à soulager l'inconfort ressenti par le patient lorsqu'une partie tête de vis fait saillie vers l'extérieur après l'implantation de la tige de fixation dans une cavité médullaire et que le tissu dans une zone affectée est stimulé, et à résoudre un problème de ralentissement dans une vitesse de récupération, provoqué par une stimulation continue.
PCT/KR2023/007941 2022-10-25 2023-06-09 Tige de fixation intramédullaire ayant une fonction de prévention de rotation osseuse WO2024090701A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020220137911A KR20240057572A (ko) 2022-10-25 2022-10-25 뼈 회전방지기능을 갖는 골수강내 고정막대
KR10-2022-0137911 2022-10-25

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WO2024090701A1 true WO2024090701A1 (fr) 2024-05-02

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WO (1) WO2024090701A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5035697A (en) * 1990-03-20 1991-07-30 Synthes (U.S.A.) Orthopedic medullary nail
US6270499B1 (en) * 1997-10-20 2001-08-07 Synthes (U.S.A.) Bone fixation device
US8435272B2 (en) * 2009-04-09 2013-05-07 Arthrex, Inc. Clavicle nail with locking end cap
WO2015200226A1 (fr) * 2014-06-25 2015-12-30 Acumed Llc Fixateur d'os à l'aide d'une tige et un fixateur d'os comportant une broche et un collier
KR20200048151A (ko) * 2018-10-29 2020-05-08 주식회사 바이원 골절뼈 사이를 고정하는 임플란트

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5035697A (en) * 1990-03-20 1991-07-30 Synthes (U.S.A.) Orthopedic medullary nail
US6270499B1 (en) * 1997-10-20 2001-08-07 Synthes (U.S.A.) Bone fixation device
US8435272B2 (en) * 2009-04-09 2013-05-07 Arthrex, Inc. Clavicle nail with locking end cap
WO2015200226A1 (fr) * 2014-06-25 2015-12-30 Acumed Llc Fixateur d'os à l'aide d'une tige et un fixateur d'os comportant une broche et un collier
KR20200048151A (ko) * 2018-10-29 2020-05-08 주식회사 바이원 골절뼈 사이를 고정하는 임플란트

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Publication number Publication date
KR20240057572A (ko) 2024-05-03

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